Pipe-laying machine.



l. L'M'AHONEY & W L. NORRIS. PIPE LAYINGMACHINE. APPLICATION FILED MAY7 1913.

Y LJ%3 Patented June 22, 1915.

5 SHEETS-SHEET I.

WITNESS ES:

Patented June 22, 1915.

5 SHEETS-SHEE'T 2.

PIPE LAYING MACHINE.

APPLICATION FILED MAY 7, I913.

, 1.1. MAHONEY & W. L. NORRIS.

HORNE? fifa IN VENTOR Jo lfn Jflz m aney WITNESSES:

1.1. MAHONEY & W. L. NORRIS;

PIPE LAYING MACHINE. mrrucmmu FILED MAY 1.1913.

5 SHEETS-SHEET 3.

Patented June 22,

d v o.$ a SV N km Wm WM Ma W MMM M 8 I Q% W% N 1.1. MAHON EY & w. L. Moms.- PIPE LAYING MACHINE- AIPPLICATION FILED NAVY-19H.

mm mwm WWW 22,, 1915.

5 SHEETS-SIIEET 5- Mmm- .ZI Warke's 1 rough and uneven ground,

QlTOHN J. MAHONEY, OF SAN FRANCISCO,

CALIFORNIA, ASSIGNORS TO CALIFO a 1 n entree mm rnon.

AND WILLIAM L. roams, (Km BERKELEY, JRNI'A rrrn LINE mficnrnn so, or sen rnancrsco, camroama, a conronarron or camromua.

PIPE-LAYING MACHINE.

Application filed. May 7, 1913. Serial itto. 766,056;

Z '0 all whom it may concern:

Beitknown'that'we, JOHN J. MAHONEY, of the city and county of San Francisco, State of California, andWILLIAM L. Norms of Berkeley, county of Alameda, State at California, citizens of the United States, have invented new and useful Improvements in Pipe-Laying Machines, of which the following is a specification.

- This invention relates to a pipe laying and screwing machine.

It is the object of this invention .to pro-.

vide a machine for connecting'and. laying pipe to form pipe lines for conveying water, oil and other fluids, and for disconnecting and taking up such pipe lines.

Another object 1s to provide apipe laying machine which is partic'ularly'adapted for handling and connecting screw threadedv pipes of considerable Weight and of large length and diameter, and by means of which the line of pipe may be quickly and cheaply laid. 1

A furtherobject is to provide a pipe laying machine which is so constructed as to travel upon the connected sections of .pipe, thus facilitating laying of the pipe across marshy land, ditches and over obstacles;

creeks, gulleys v forming a track on which the the pipe thus machine travels in moving from one sectionto another. 1

Among other objects, which will behe'reinafter set forth, is the provisionof a means for raising and lowering the machine and pipe in relation to the ground by a power 'plantcarried by the machine, .meansfor pipe on which it is latter, and means for rotating a section of pipe by motor owe'r toconnect'it in screwed engagement with the end of a subsequently laid section, which means is adapted to cushien the application of ower thereto, equalize strains, compensate ing or retracting of the added pipeas the threads screw in or out, and operate indicating means by which the operator can d6.

. termine when .the pipe has been set up and is sulhciently tight.

The invention resides ina carriage adapted to travel on' a pipe as on a track, and

means for picking up and. screwing asecor the advanc Specification of Letters Patent. Patented June 22, llghfi.

tion of pipe to the section on which the carriage is mounted or removing it therefrom.

The invention further consists of the and combination of more fully described and the construction parts as hereinafter and claimed, having reference to the accom-' panying drawings, in which-- Figure l is aside elevation ofthe invention. Fig. 2 is a View in elevation from the side of the machine opposite to that shown in Fig. 1, with parts broken awayand partly in vertical section. Fig. 3 is a' plan View corresponding to Fig. 2, with portions broken away. Fig. 4 is a front end elevati'on with parts removed. Fig. 5 is a detail section and elevation onthe line AA pf Fig. 3. Fig. 6 is a detail section on the me for clampin the machine to the Fig. 7 is a etail in side elevation of same. Fig. 8 is a detail in elevation of theexpansible and contractible 16 pipe clamp vearr ing device. Fig. 9 is a vertical section on t 1e line CC of Flg. 8.

In thedrawings, theframe or carriage body of the machine is here shown as consistin of a tubular member adapted to surroun the pipe to be laid. 'llhiscarriage body 2 is preferably formed of a lar diameter of pipe. The forward end of t e carriage body 2 extends through and is secured to a channel plate 3, and is provided with similar channel plates 4 throughout its length to form suitable supports for the bearings of various mechanisms to be hereinafter-described.

lRevolubly mounted on a bushing 5, secured to the forward end of the carriage 2 is a toothed wheel 6, which wheel is adapted to be rotated by means of a pinion 7, carried on a short-shaft 8, journaled in suitable bearings. The shaftS carries a pair of spaced toothed wheels 9 and 9', which'are ada' ted to be engaged by toothed wheels 10 an 10' of difl'erent diameters, mounted to move longitudinally on a countershatt 11 and revo- ,ble therewith. The toothed wheelslO and 10- are adapted to be shifted by means of a hand lever 11' to throw the toothed wheel 10 into engagement with the toothed wheel is indicated at 2, and

not I toothed wheels 10 and 10' between the toothed Wheels 9 and 9 out of engagement therewith.

The toothed wheels 9 and 10 and 9 and 10' are of different diameters in relation to each other for the purpose of varying the speed of rotation of'the shaft 8, and consequently the pinion 7 and toothed wheel 6 in relation to the countershaft 11, as iscom mon in change speed mechanism. The countershaft 11 extends parallel with the car.- riage 2 and is revolubly mounted in suitable bearings carried by the channel plates 3 and 4. ,A toothed wheel 12 is mounted on the countershaft 11 and is adapted to be engaged by either one of two pinions 13 and 13'.

The pinion 13. is slidably mounted on the squared portion of a shaft 14, on which is mounted a friction disk 15, adapted to be thrown in and out of engagement with the I fly-wheel 16 on the drive shaft of a suitable engine or motor 17, mounted on the carriage 2. The pinion 13' is an idler and is loosely;

mounted on a stud shaft 18 and is in constant mesh with the pinion 13. The pinions 13 and 13 are designed to slide lengthwise on their res ective shafts 14 and 18 and are adapted to e thrown alternately in and out of engagement with the toothed wheel 12 to rotate the latter and the shaft 11 when the shaft 14 is connected with the engine shaft through the clutch 15 and fly-wheel 16.

The means for shifting the pimons 13 and 13 is here shown as consisting of yokes 19 and 19, which are slidably mounted on the shafts 14 and 18 and extend on. the opposite sides of the pinions 13 and 13'. The yokes 19 and 19' are connected together by means of a link 20 which is slotted longitudinally to receive ins 20 carried by the yokes 19 and 19. he lower end of the link 20 is connected to a hand lever 21, fulcrumed at 22, in such a manner that when the h nd lever 21 is rocked, the link 20 will operate to move the pinion 13 in one direction and the pinion 13 in the opposite direction. The pinions 13 and 13' have a limited movement on their respective shafts 14 and 18, and are so arranged and positioned, in relation to each other, that when disposed in an intermediate position, as shown in Fig. 2, the pinions 13 and 13 will be out of engagement with the gear 12. By shifting the hand lever 21 to the right the pinion 13 will be thrown into mesh with the toothed the shaft 14, and when the hand lever 21 is thrown to the extreme position "to the left, the pinion 13 will be moved out of mesh with the toothed wheel 12 and the pinion 13 will be thrown into mesh with the toothed wheel 12, so that the latter will be rotated indirectly from the shaft 14 through thepinions 13 and 13'; the pinion 13' being of such width as to be engaged by the pinion 13 when the latter is in its outermost position.

By the operation of the hand lever 21 to shift the pinions 13 and 13', as just described, the direction of rotation of the toothed wheel .12, countershaft 11, the toothed wheels 10 and 10, 9 and 9, pinion 7, and the toothed wheel'6 may be varied as desired and rotated by means of the engine 17 through the clutch 15 and shaft 14.

The carriage 2 is designed to travel and be propelled in either direction on the pipe line for constructing which this machine is designed. For this purpose a tractor wheel 23 is provided, adjacent the forward end of the machine, which tractor wheel is revolubly mounted on a shaft 24, carried by a oke 25, pivotally mounted on a shaft 26, 3ournaled in suitable bearings on the carriage 2. The tractor wheel 23 is formed with outwardly flared flanges on its sides and extends through an opening 27 in the carriage frame 2 so as to contact and ride upon the pipe D, as is particularly shown in Fig. 2; the flanges on the tractor 23 hearing on the pipe D on each side of its vertical center. v

A air of trailing wheels 28, adapted to travel on the pipe D, are rovided at the rear end of the carriage to orm a revoluble support for this end of the carriage on the pipe D, as shown in Fig. 1. The outer end of the yoke 25 connects with a oke 29, which yoke 29 is disposedastride o the carriage frame'2 and has a horizontally extending cross-bar 30 mounted on its lower ends a short distance below the underside of the carriage frame 2. The cross-bar 30 is connected to a foot lever 31, pivoted at 32 on the channel plate 3, the upper portion of which lever extends upwardly alongside of the carriage body 2 and has a foot rest 33 on its upper-end. The foot lever 31 is adapted to be depressed by the weight of the operator to throw the tractor wheel 23 into operative engagement with the pipe D. The downward pressure on the outer end of the lever 31 acts to move the tractor wheel 23 downward against the pipe D and to move the forward end of the carriage body 2 in an upward direction after the tractor 23 contacts the pipe D, thus throwing the weight of the forward end of the carriage body 2 onto the tractor and thereby frictionally engaging the tractor 23 and pipe D.

ran 1 wheel 23 will be rotated-thereagainst movement either longitudinally, or vertically; This means, is here laterally,

shown as consisting of a pair of vertical standards 38, which are slidably mounted in guides 39, carried by the channel plate 3. The lower ends of t e standards 38 are connected together by means of a growlerv board 40. The growler board 40 is adapted to rest upon the ground and span a ditch or trench and .form standards when the ground is rough and uneven. Formed on the standards 38 are rack teeth 41 which are engaged by pinions 42, mounted on a shaft\4'3, supported by suitable bear; ings on the channel plate 3. A worm-wheel 44 meshing with a worm-pinion 45 on a shaft "46 serves to lock the shaft 43, -pi-nions42 and /the standards 38. against movement when the shaft 46 isnot rotated. The shaft 46 is designed to be rotated in'either direction from the toothed wheel 12'to rotate the shaft 43 and pinions 42, through the worm pinion 45 and worm-wheel 44, and thereby cause the forward end of the carriage frame to move up and down onthe standards 38.

Means are' provided for gearing the shaft the toothed wheel 12 directly and in 46 to directly and which is adapted to be thrown out of connection with the toothed wheel '12 when the machine is in a stationary position so as notto transmit motion to the shaft 46 from the toothed wheell2. This means is here shown as consisting of a pinion 47, keyed on the shaft 46; a toothed wheel 48 meshing with pinion 47 and carried by rocker arms 49 pivoted on the shaft 46; .and a pinion 50 meshing with the toothed wheel 48, and carried by arms 51 pivoted to rock on the axis of the toothed wheel 48. The arms 49 normally gravitate to a lowermost position againstv a stop 52,-'in which position the teeth of the wheel 48 will be out of mesh with the teeth of the wheel 12.

The arms 51, carrying the pinion 50,'are

. connected to a lever 53 which extends in wardly over the carriage'body 2 and is connected by a link 54 to a bell-crank lever 55, fulcrumed at 56 'and adapted to be a level support for the v rocked by hand to throw the 1311110111 50 or r the toothed wheel 48 in and'out'of engages ment with the toothed wheel 12. The lever :55 normally .gravitates onits fulcrum 56 to position the pinion '50 in mesh withv the toothed wheel 12. and is held in an mtermediate position in any desired anner to dis-' POSBfthPlIllOIl 50 out of e 'gagement with the toothed wheel 12.

A stop 58 is provided on the arm 49 to side 0f the pipe D.

limit the rearward movement of the arms 51 in such a manner that when the lever 55 is rocked to the left to elevate the lever 53, the arms 51 will en age thestop 58 to cause the arm 49 to move in an upward direction and throw'the toothed wheel 48 into engage ment with theptoothcd wheel 12, so that when the latter is rotated a rotary motion will be transmitted from the wheel 12' through the wheel 48 and'pinion 47, shaft 46, worm-pinion"45, worm-wheel 44, shaft 43, and pinion 42, to cause the latter to move in one direction on the racks 41 formed on the standards 38. By throwing thehand lever 55 t0 the extreme right, the lever 53 will be moved downward to position the pinion 50 in engagement with the toothed wheel 12, so as to transmit a rotary motion ,to the pinions 42 through the pinion 5 0 and toothed wheel 48, etc, to move. the: pinions 42 -.in a reversed direction on the stand--' ards 38.

Means are provided for clamping or locking the carriage frame 2 to the pipe D so as to prevent rotation of, thelatter and also tosecune' the carriage body 2 against longitudinal movement. This means is particu larly illustrated in sists of a curved arm 59 carrying gripping teeth 59', pivotally attached at one end to a link 60, pivoted at 61 to one side of the carriage body 2; the arm 59 being, adapted to extend through a circumferentia slot, 62. The slot' 62 is formed on the underside of the carriage body to position theteeth 59' on the concave upper edge of the'curved arm in engagement with the underside of the pipe I). The outer end of the arm 59 eX- Figs. 6 and 7, and con-" tends through a link63 and is held in\engagement therewith .bymeans of a pin 64.

carried on the outer end of the arm 59. The

mounted in the slotted arm 68. The,pivot pin .65, connecting the link 63 and the link 66, extends on opposite sides of the'latter in such a manner as to engage the underside of the slotted arm '68 to support the arm on the link 66. I a A Mountedin the outer end of the slotted arm 68 is a threaded shaft 71, provided with a handhold72, by means of v 71 may be rotated in its threaded hearings to advamce the block 70 against-the upper end of the link 66 and move the-latter in a rearward directiomto exert an upward pull on the link 63 and the curved arm '59 to causethe/latter to bear against theunder- The upward movement the upper end of designed to be disposed which the shaft wardly extending flange of the pipe. D, when the curved arm 59 is downfront end of the machine, is-a'ana'st 73, 'car- 4 rying a boom 7 3' which extends forward of to the-pipe D.

. The pipe gripping means is and jaw relation to each the carriage gaging hook The boom 73 body 2 and carriesaipipe-em 74, adjacent to its outer end. is supported by stays 7 3 connecting With the mast 73, which in turn. is rigidly held .by' guys connecting with the carriage bodyat suitable points. This hook 74 is adapted to engage and support a length of pipe E which is to be connected Means are provided for gripping the pipe E, when supported on. the hook 74, and conmeeting it to the toothed wheel 6, so that when the latter is rotatedthe threaded end of the pipe E may be screwed in or out of a coupling F. onthe outer end of the pipe D. here shown,

particularly n Figs. 3 and :4, as consisting of an arched arm 75, adapted to extend over the pipe E, and a curved grippingfaw 76 carried by the arched arm .75 adapte to extend underthe pipe E, which arched arm 75 6 are designed to be adjusted in other to clamp the pipe E against rotation therebetween.

The connections between the jaw 76 and the arm 75 consist of a yoke 77 pivoted at one end to the jaw '76 and straddl'ng a shoulder 7 8 on the archedi arm 75, andan adjusting bolt 79 screwed in the outer end of the yoke 77 hearing against th shoulder 78. The bolt 79 is provided for t e purpose of ad usting the position of, the pivn oted connection between the yoke 77 and the jla ilw 76 twith ra'elaftiolrli to the arched arm 75. eoueren o t e i in W76 iv otally connects with a $113 80, %hie upper dnd of which connects with a' short link 81 pivoted on the arched arm the links 80 and 81 forming a toggle which is ada ted to be operated to move the arched arm 75' and the jaw 76 toward and away from each other.

When the toggle is thrown inwardly beyond the center, as shown in Fig. 4, it serves to lock thejjaw 76 against the pipe E so as to clamp the latter between the'jaw and the embed arm. The arched arm 75 is con-' nected at its ends to the toothed wheel 6; corresponding strain equalizersvbeing interposed between the ends'of the arched .arm

5 and the toothed wheel 6 for the purpose of equalizing the strains on the gripping ,or a downward direction.

members and for cushioning the strains imposed upon the pipe E and gripping members when the toothed Wheel 6 is rotated.

One of the strain equalizers is particularly shown in Figs. 8 and 9. It consists of a plunger 83 which is pivotally connected to the outer end of the arched arm 75, the plunger 83 being mounted in a frame 84, pivotally attached to a yoke 85 having a swiveled connection with the toothed wheel 6. A helical spring 86 is interposed between the plunger 83 and the frame 84 in such a manner as to oppose the outward movement of the plunger 83 and the frame '84 in relation to each other; the spring 86 forming a resilient or eXpansible and contractible connection between the gripping member and the toothed wheel 6.

-Means are provided for indicating the strains imposed upon the gripping members 75 and 76, which means is controlled by the tension of the spring 86. This means is here shown as consisting of a toothed rack 87, carried by the plunger 83, for engaging a pinion 88 mounted on a shaft 89 journaled in the frame 84 and having an indicator or pointer 90 adapted to travel over a scale 91, which scale 91 is formed on the face of the frame 84. The scale 91 is graduated in pounds according to the tension of the'spring 86, so that when the latter is com ressed the strains imposed thereon will be indicated by the pointer 90 and the scale 91.

In the operation of this invention, thepipe D is introduced into the carriage body 2, with its outer end carrying the coupling F, disposed adjacent to the outer or forward end of the carriage 2, the pipe D being supported rearward of the carriage 2 on timbers G, or in any Jther suitable manner. The height of the carriage 2 is regulated to osition it parallel with the pipe D, so that t e outer end of the pipe D will be concentric with the toothed wheel This vertical adjustment of the carriage is accomplished by operating the hand lever 55 to throw either the pinion 50 or the toothed wheel 48 into engagement wxtlrthe toothed wheel 12, according to whether it is desired to move the carriage 2 in an upward The rear end of the carriage 2 being supported on the pipe D, through the rollers 28, the latter Wlll act as a fulcrum or center on which the carriage 2 will rock vertically, when being adjusted as just described, to the extent of movement permitted by the space between the outer end of the pipe D and the inner wall of the carriage 2.

It will be seen, when the carriage 2 is supported on the standards 38, that when the timbers G are removed the outer end of the pipe D will be supported by the carriage body 2.

rattan n i This will permit'of the pipelD being 'raised member 7 6 in such a manner as to tighten 65 and lowered in unison with the carriage to on the pipe Eas the strain increases to predispose the carriage and the pipe on any devent slipping of the jaw. sired plane. By removing the timbers or When the clamping members 75, and 76 supports G, adjacent-to the rear end of the 3 arein position on the pipe E, the threaded carriage 2, the latter may be lowered sufend of the latter is disposed in position to 70 'ficiently to bring the hook 74 in close prox enter the threaded coupling F on the pipe D. imity with the ground, where it may be enr The pinion on the shaft 11, is then T vgaged with a loose length of pipe E; the thrbwn into mesh with the pinion 9 on the 1Q pipe D being of suflicient flexibility between shaft 8; the pinions l0 and 10 being prethe rear end of the carriage 2 and its supviously disposed intermediate the pinions 9.75 ports G, which may be spaced as far rearward and 9' so as to be out of engagement with of the carriage as may be desired, to permit the latter when the shaft 11 is rotated the downward movement of the forward end threugh the gear 12 in adjusting the car-. 15 i of the carriage 2 necessary to bring the hook riage 2 to its vertical position.

74 into eng'ageablerelation with the pipe E. I When the pinions 9 and 10 are inter-. 80 When thus lowering the forward end of meshed, the clutch 15, previously thrown out the machine the pipe D is freed from the Jof engagementv with the fly-wheel 16,- is clam 5-9. again operated so as to transmit motion r A ter the hook'7 4 has been engaged with from the engine shaft through the clutch 15,

the pipe E, the carriage 2\is elevated, thereshaft 14, pinions 13 or toothed wheel 85 by liftingthe pipe E clear of the ground 12, shaft 11, pinions 10' and 9, shaft 8, and and suspending it from the boom 73 in pinion 7 to rotate the toothed wheel 6 in such alinement with the axis of the toothed wheel a direction as to screw the threads on the 6 and pipe D, the carriage 2 being raised to pipe 'E into thecoupling F on the pipe D.

such a point as to dispose the open end of, After the threads have been properly started, 0 the pipe D concentric with the toothed wheel the pinion 10 may be thrown into engage- 6, as before described. When the proper ment with the pinion 9, if desired, to increase vertical adjustment of the carriage 2 is obthe speed of rotation of the toothed wheel 6. 3o tained, the hand. lever .55 is operated ,to i The toothed wheel..6 in revolving causes the throw the pinion 50 and toothed wheel 48 clamping members 75 and 7 to rotate there- 9 out of engagement-with the toothed wheel with through the plungers 8 and the'frames 12, as shdwn in Fig. 5.. This actidn discon- 84,-the springs 86 bearing the strains transnects the shaft 46 from the engine. The mitted from the toothed wheel 6 to the I weight of the forward end of the machine clamping'members and pipe E.- As the pipe will now be supported on the pinions 42 and E screws into the coupling F, the resistance 100 standards38. The pinions 42 and the shaft to'turning the pipe E is increased, thereby 43 on which they are mounted are held causing a correspondingly increased strain against, rotation by reason of the wormon the springs 86 through the medium of the wheel 44 meshing with the worm-pinion 45. plungers 83. I When the parts have beenpositioned as By determining what force .or power. is 105 ust described, the pipe Dis clamped rigidly required to set the threaded end of the pi e to the carriage 2 by means of the curved arm Einto the coupling F, it is possible. to (fe- 59- The clamping mem ls, consisting 1 f, termine, through the indicator 90and the the curved arm 75 and the aw 76, are-then graduations '91, when the pipe E, has been placed over the pipe sect ion E, rearward screwed sufficiently far into the coupling F 110 of thevthreaded outer end'thereofl'and are to make a tight joint. The movement of arranged some distance from the toothed the plunger 83 on the com' reesion of the wheel 6, as shown in Figs. 2-;.'and 3-. The, spring 86 causes the rack 8 -to-rotate the pivotal connections of the plunger 83 and the pinion 88 and pointer 90 to indicate onthe frame 84 to the arm 75 and the toothed graduations 91 the extent of the strain im- 115 wheel fi are such asto permit the'clamplng osed on and resisted by the sprin 86. members bemg ositloned a suitable distance When xthfi pipe E has been sufiiciently from the outer ace of the wheel 6. The arm screwed into; the coupling F, the toothed- I andthe gripping jaw 76 are clamped on wheel 6 is thrown out of operation by manip-f the pipe E by. means nf the toggle links .ulating the clutch-operating lever 15 or 1 and 81 and the. yoke 77 .and the bolt 79, as 'shiftin'gthe pinions 10 and 10, or the pinbefore described, suflicientlyt ght to prevent ions13- and 13', into their inoperative posithe rotation of pipe E with relationto the. tions to stop the. rotationof the wheel 6.

I 611 clamping members 75 and 76. -The clam Where it is desired to-bury the threads of I ing'face of the jaw; inember76 is formed 0 a the pipe E in the coupling F, it is only necbloc k 7 6' which is preferably toothed or ser' essary to watch the advance of the pipe E rated to increase 1ts-gripping power; the into the. 1 upling F until the threads disblock'76 being pivoted centrally to the jaw ea e provision of the springs 86,

. between the plungers 83 and the .frame 84,

. pipe E and the perform an'important functiom'in that the clampingfmembers thereon may move inwardly and outwardly, with relation'to the toothed wheel 6. as the pipe E is advanced or retracted in the coupling F.

, When the pipe E has been set in position, the clamping members 7 5' and 7 6 are released therefrom and the clamping) member 59 is such a direction as to'move the standards'38 clear any obstacles in an upward direction "and thereby leave the carriage 2 supported upon the pipe D. The forward end of the carriage 2 moves downwardly into contact with the pipe D before-the standards 38 begin to move'up wardly.

When the standards 38 have moved sufl'lciently far so that the growler board 40. will thereof, and the pinions 43am thrown out of operation, the operator throws his weight on the lever 31 to depress the latter and thereby exertsa downward pull on the tracthr 23 through the medium of the yokes 1 25-29 and the bar 30. The downward pressure on the outer end of the lever also acts to 11ft the forward end of the carriage .2 clear.

'of the pipe D, when the latter is brought mto contact With'the-tractor .23 on the down- 7 ward movement thereof.

By throwing in the clutch 15 motion' will be transmitted to the shaft 11 through the gear 12, as before described, and from thence through the pinions 3 p 37, shaft 26, and pinion 35, to the trac r a the latter to cause the carriage to travel forward from the pipe D onto the pipe E suitable distance. When it is desired to brmg the carriage to a stop, the operator throws out the clutch 15, and if it is necessary to brake the carriage against further movement, such as may be .occasioned 'by momentum or inclination of the pipe D, the lever 31 is releasedto cause the outer end of the carriage 2 to come into frictional en.- gagement with the pipe E. By operating the pinions- 13-13', the direction of rotation of the tractor 23 may be reversed as de;

, sired so that the carriage 2 may be propelle from tipping from side in either direction on the pipe D or E.

As a means forpreventing the machine toaside, when moving from one point to'another on the pipe in the outrigger 1) adjacent to the rear end of the 2. The pinions 42, engaging with described, in

that may be in front.

23, thus rotating line, an outrigger 92 is provided, which out-' elements of the apparatus being so disposed in relation to the axial line of the carriage 2 as' to be approximately balanced on each side so that the machine may be maintained in equilibrium on the pipe D by manipulat- 92 by hand. en the apparatus has been moved to the forward end of the pipe E, the stand ards 38 are moved downward to position the growler board ii) on the ground, as before described, whereupon another loose section pipe E is picked up and the level of the carriage 2 adjusted in readiness for another pipze screwing operation, as beforedescribed. y constructing the apparatus so as to adapt it to travel on a {MP9, it is rendered outrigger 92 is held manually;- the various possible to 16y pipe lines over uneven surfaces, and by providing the adjustable standards 38 so arranged as to span a ditch or trench, the pipe line may be laid and lowered into a ditch when occasion so re- 1. Ina machine for connecting pipes and the like, a carriage movably mountable on a laid pipe, driving means on the carriage, means actuated by said\dri'ving means for connecting a second pipe to the first pipe, means for moving the carriage to ena 1e alinement of the pipes, by the drivingmeans to progressively move the carriage from one/pipe toanother as same are connected so as to be positioned ready for connecting a new pipe to the last connected pipe.

2.v In a ipe screwing machine,the combination o a carriage adapted to be movably mounted on'a horizontal pipe, a motor mounted on said carriage, means for pro.-

pelling said carriage horizontally on the pipe by said motor, means for moving the carriage vertically, revoluble pipe gripping means on said carriage, and means for retatingsaid pipe gripping means by said motor.

3. In a pipe screwing machine, the combination of a carriage a apted to be movably mounted on a horizontal pipe, 0. motor mounted onsaidcarriage, means for propelling said carriage horizontally on the pipe by said motor, means for moving the carriage vertically, revoluble pipe gri ping means on said carriage, means or'ro ating said pipe gripping means by said motor,

- and gripping means for locking the carriage and a pipe together.

In aplpe'screwmg machinefthe comand means actuated bination of a carriage adapted to be movably mounted on'a pipe line as on atrack a motor mounted on said carriage, means for propelling said carriage by said motor, revoluble pipe gripping means on-said caring said legs by said motor. 0

5. In a pipe screwing machine, the combination of a carriage adapted to be mov-- ably mounted on a pipe line as on a track, a motor mounted on said carriage, means for propelling said carriage by'sa-id motor, revoluble pipegripping means on said can riage,'means for rotating said means by said motor, adjustable supporting legs on said carriage, means for operating said legs byv said motor, and means on said carriage for suspending a pipe in horizontal relation thereto.

6. ln a pipe screwing machine, the combination of a carriage adapted to be mov ably mounted on a pipe line as on a track, a motor mounted on said carriage, means for propelling said carriage by said motor, revoluble pipe gripping means on said carriage, means for rotating said pipe gripping means by said motor, adjustable sup-. porting legs on said carriage, means for operating, said legs by said motor, means on said carriage for suspending a pipe in hori zontal relation thereto, and means on said carriage for attaching same to the pipe on which it is mounted.

7. In a pipe screwing machine, the com bination of a carriage having a runnin gear adapted to trl'ivel'on a pipe line as on a track, a gear wheel rotatable on the carriage,"a motor mounted on said carriage,

means for driving said running gear from said motor to propel the carriage in either direction, pipe gripping means mounted on said gear wheel, and means for rotating said gear wheel by the aforesaid motor.

8..In a machine for connecting pipes and the like, a carriage having means for mountmg same on a pipe, operating means on the carriage, means actuated by said operating meansfor connecting a second pipe to the first pipe and means actuated by said operating means for moving the carriage. onto the second'pipe after same has been connectedto the first pipe in position for connectmg a third pipe to the second pipe.

9. In a machine for connecting pipes and the llke, a carriage movably mountable on a laid pipe, means on the carriage to connect a second pipe tothe first pipe, and means to 'actuatethe carriage to progressively move same from one pipe to another as same are connected so as to be'positioned ready for connecting a new pipe to the last/connected pipe. I

10. In a pipe screwing-machine, a tubular p p ppi 'gether, and means \for movi plpe to raise or lower it with the carriage, rollers thereon adapted to travel on a cylindrical pipe extending through said mounted on saidcarnage, means on said carriage for driving said'pipe screwing mechanism by motive power, means for propelling said carriage on the pipe by motive power operating on one of the said rollers, and means'for locking the carriage and pipe together. i

tubular carriage, pipe screwing mechanism '11. In a pipe screwing machine, a tubular carriage, rollers thereon adapted to travel on a. cylindrical pipe extending through said tubular carriage, pipe screwing mechanism .mounted on said carriage, means on said carriage for driving said' pipe screwing mechanism by motive power, means for propelling said carriage on the pipe by motive power operating on one of said rollers, means for locking the carriage and pipe torig, the carriage in a vertical direction.

-12, In a pipe screwing machine, a carriage, a motor for propelling the carriage horizontally, means for raising and lowering the carriage, means for clamping the carriage to a pipe, and revo-luble pipe gripping means on thecarriage operable by the motor. a

13. In a pipe screwing machine, a carriage, a motor for propelling the carriage horizontally, means for raising and lower ing the carriage, means for clamping the carriage to a pipe revoluble pipe gripping means on" the carnage operable by the motor, and-eXpanSible connections between the I gripping means and its source of rotation.

14.111 apipe screw ng machine, a carriage, a motor for propelling the carriage horizontally, means. for raising and lowering the carriage, means for clamping the carriage to a pipe, revoluble pipe gripping means on-the carriage operableby the motor, expansible connections between the gripping means and its source of rotation,

and means for indicating the resistance offered said eXpansible connections.

15. In a pipe laying machine, a carriage movably mountable on a laid pipe, ground engaging means movably connectedto the carriage, driving means on the carriage to operate the ground engaging means to enable anew pipe to be alined with a connected pipe, and means to support a pipe from 1 the carriage so that the same will partake of the carriage movements, and means to enable the carriage to be moved on the pipe.

,16. In a pipe laying machine, a carriage, a motor on said carriage, standards slidably mounted on said carriage, means operable by the motor for moving the carriage vertically on the standards, means'fonlocking the carrlage in relation to the standards, means on the carriage for engaging and supporting a carriage,

means for locking the carriage on a pipe, rotary plpe gripping means, and means operable by the motor for actuating said pipe gripping means.

' 17. In a pipe laying machine, a carriage, a motor on; said carriage, standards slidably mounted on said carriage, means operable by the motor for moving the carriage vertically .on the standards, means for locking the carriage in relation to the standards,

means on the carriage for engaging and supporting a pipe to raise orlower it with the carriage, means for lockmg the carnage on a pipe, rotary pipe gripping means, means operable by the motor for actuating said. pipe gripping means, and means for propelling the carriage on the pipe operated by the end of the carriage to rock with the rear connected pipe.

' motor.

18. In a machine forlaying pipes and the like horizontally, a carriage movably mount.- able on a laid pipe, ground engaging means connected to the carriage to support the latter, means whereby the carriage may be raised or lowered relative to the ground engaging means, means on the carriage to connect a second pipe to the first pipe, and meansto actuate the carriage and therewith the ground engaging means to progressively move both from one pipe to another as same are connected so as to pOSItlQII the parts ready for connecting a new pipe to the last 19. In a pipe laying machine, a carriage movably mountable upon a laid 'pipe, driving means on the carriage, means actuated by the driving means to allowthe forward end of the carriage. as a fulcrum, and means secured to the laid pipe, and means to rotate 'said gripping means and thereby the second pipe from the carriage whereby to connect the pipes.

21. In a pipe laying machine, a tubular carriage for receiving a laid pipe, pipe screwing means on the carriage, means for driving the pipe screwing means, and means whereby the carriage may be rocked about the laid pipe as a fulcrum for bringing the second pipe into ahnement with the laid pipe. p 22. In a machine for connecting'threaded pipes, pipe gripping means adapted for engagementwith one of a pair of adjacent pipes to rotate same, and means adapted to be mounted on the other pipe and being connected to the gripping means for positively rotating the latter whereby to connect the P p In testimony .whereof we have hereunto set our hands in the presence of two subscribing witnesses JOHN J. MAHONEY. p WILLIAM L. NORRIS.

Witnesses: I

JOHN H. Hnimme, ,7 W. W. Emmy. 

